NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES
Weight:3.2 kg
1100-1248
52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, HEAD GASKET, AND BASE GASKET. WHEN YOU USE THIS SSP-G 52mm BIG BORE CYLINDER SET IN CONJUNCTION WITH OUR 44MM STROKER CRANKSHAFT (SEE RELATED ITEMS) YOU WILL INCREASE YOUR TOTAL DISPLACEMENT TO 93.4CC, ALMOST DOUBLING YOUR ORIGINAL DISPLACEMENT!!! WE RECOMMEND THAT YOU USE OUR QMB139 PERFORMANCE CYLINDER HEAD WITH THIS SET AS SOME STOCK CYLINDER HEADS WILL NOT FIT. USE WITH AN UN-MODIFIED STOCK HEAD CAN CAUSE SERIOUS ENGINE DAMAGE. *YOU MAY NEED TO MODIFY YOUR ENGINE CASE TO ACCOMMODATE THE LARGER CYLINDER. UPGRADES TO 87.9cc CYLINDER BORE: 52mm CYLINDER SLEEVE OUTER DIAMETER: 54.8mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.8mm COMPRESSION HEIGHT (FROM CENTER OF WRIST PIN HOLE TO TOP EDGE OF PISTON): 17.25mm
